docs(website): fix broken link to multi-actor scenarios

Signed-off-by: Bradley Turek <[email protected]>

Author: TurekBot

src/docs/handbook/web-testing/your-first-web-scenario.mdx

@@ -248,7 +248,7 @@ describe('Todo List App', () => {
 Serenity/JS test scenarios can involve **one or multiple actors**. This is useful, for example, when designing scenarios for contexts
 where several actors interact with one another, or where several actors are required to complete different parts of a larger workflow.
 Examples of such contexts include multi-user workflow systems, messaging systems, video games, and so on.
-You can see an example of a basic multi-actor test scenario in [`spec/multi-actor.spec.ts`](https://github.com/serenity-js/serenity-js-playwright-test-template/blob/main/spec/multi-actor.spec.ts).
+You can see an example of a basic multi-actor test scenario in [`spec/multi-actor_scenarios.spec.ts`](https://github.com/serenity-js/serenity-js-playwright-test-template/blob/main/spec/multi-actor_scenarios.spec.ts).
 
 ### Modelling workflows using reusable activities
 
@@ -428,7 +428,7 @@ makes it easy to see exactly where the assertion failure has happened.
 ### Exercises
 
 1.  Compare a single-actor scenario in [`spec/recording_items.spec.ts`](https://github.com/serenity-js/serenity-js-playwright-test-template/blob/main/spec/recording_items.spec.ts)
-    and a multi-actor scenario in [`spec/multi-actor.spec.ts`](https://github.com/serenity-js/serenity-js-playwright-test-template/blob/main/spec/multi-actor.spec.ts).
+    and a multi-actor scenario in [`spec/multi-actor_scenarios.spec.ts`](https://github.com/serenity-js/serenity-js-playwright-test-template/blob/main/spec/multi-actor_scenarios.spec.ts).
     What differences and what similarities can you see in how the actors are accessed?
 1.  Inspect tasks in [`spec/todo-list-app/TodoItem/tasks.ts`](https://github.com/serenity-js/serenity-js-playwright-test-template/blob/main/spec/todo-list-app/TodoItem/tasks.ts).
     What Serenity/JS web interactions do they use? Can you find their usage examples in the API docs of the [`@serenity-js/web`](/api/web) module?